Adjustable eccentric.



, L. BAUROTHf ADJUSTABLE EGGENTRIG. APPLIGATION FILED we. s. 1908.

. Patented June a, 1909. 5 A 5 I 2 witnesses.

fiUM 6% Ella.

" Inventop LEONHARD BAUROTH, OF TOLEDO, OHIO.

ADJUSTABLE EGCENTRIG.

Specification of Letters Patent.

Application filed August 3, 1908.

Patented June 8, 1909.

Serial No. 446,827.

To all whom it may concern:

Be it known that I, LEONHARD BAUROTH, a citizen of the United States,and a resident of Toledo, in the county of Lucas and State of Ohio, haveinvented a certain new and useful Adjustable Eccentric; and I do herebydeclare the following to be a full, clear, and exact description of theinvention, such as will enable others skilled in the art to which itappertains to make and use the same, reference being had to theaccompanying drawings, and to the figures of reference marked thereon,which form a part of this specification.

My invention relates more particularly to means for adjusting the throwof plungers of punch-presses, or the like, to adapt them to operate onwork of different sizes, but is not restricted to such use.

The object of my invention is the provision of a simple and efficientadjustment of this character, which is strong and durable in itsconstruction, simple of adjustment and adapted, when adjusted, topositively prevent a relative turning of the adjusting parts.

The operation, construction, and arrangement of the parts of theinvention are fully described in the following specification, andillustrated in the accompanying drawings, in which,

Figure 1 is a cross-section of a crank-shaft, as along a line x a: inFig. 2, and Fig. 2 is a side elevation thereof with the eccentric blocksand encircling-strap or plunger head in section as along the line 'y yin Fig. 1.

Referring to the drawings, 1 designates a crank-shaft and 2 thecrank-pin or eccentric thereof. This pin is preferably made square incross-section, but may be of other polygonal shape if desired, and is sodisposed relative to its turning axis or shaft center 3,

which falls within the perimeter thereof, that such point 3 falls nearerto each of two adjoining sides of the pin than to any of the other ofsaid sides, and nearer to one of such adjoining sides than to the otherthereof, as shown.

A circular-block 4 is eccentrically carried by the crank-pin 2 and hasits pin receiving opening of corresponding shape and size to thecrank-pin to adapt it to fit closely therearound, as shown. The block 4when used in connection with a crank-pin disposed intermediate the endsof shaft, is preferably made in two sections with the dividing lineintersecting the crank-pin in parallelism with and substantially midwayof two opposed sides thereof, so that each half or section receives twoof the corners of the crank-pin in a manner to prevent a relativetwisting of the pin within the block.

5 designates the eccentric rod or plunger, which has its head or straploosely mounted on the eccentric block and provided with the removablecap 5, which is bolted or otherwise suitably secured to the base portionof the head.

It is apparent that by offsetting the crankpin center from the shaftcenter in the manner shown and making the crank-pin square or of otherpolygonal shape in cross-section, the throw of the eccentric rod orplunger is capable of as many distinct adjustments as there are sides tothe crank-pin, and also that the polygonal form of the crank-pin willprevent a relative slipping or twisting of the pin within theeccentric-block, thus maintaining the parts in accurate adjustment atall times.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent, is,-

1. In combination, a crank-pin of olygonal shape in cross-section, acircular b ock eccentrically fitted thereto, and an eccentric rod orplunger mounted on the block, said pin having its turning axis dis osedwithin its perimeter and nearer to eac of two adjoining sides thereofthan any of the other sides and nearer to one of said adjoining sidesthan to the other whereby the block may be shifted to as many distinctpositions of adjustment relative to the pin as there are sides on thein.

2. In corn ination, a crank-pin of olygonal shape in cross-section, acircular b ock eccentrically fitted thereto and comprising a pluralityof separable sections, and an eccentric rod or plunger carried by theblock, said pin having its turning axis dis osed within its perimeterand nearer to eac of two adjoining sides of the pin than to the othersides thereof and nearer to one of such adjoining sides than to theother, substantially as described.

In testimony whereof I have hereunto signed my name to thisspecification in the presence of two subscribing witnesses.

LEONHARD BAUROTH.

Witnesses:

O. W. OWEN, OowELL SoHNErBLE.

